78. Two moles of an ideal gas undergo isothermal expansion from a volume of 1.0 L to a volume of 10.0 L against a constant externalpressure of 1.0 atm. Calculate the changes of internal energy (ΔE). (1 L·atm = 101.3 J)
(A) 9.12 × 102 J
(B) 1.82 × 103 J
(C) –9.12 × 102 J
(D) –1.82 × 103 J
(E) 0 J